Worms

You are in control of four little worms. It's your team. The other team(s) can either be computer or human controlled. You have a huge arsenal of weapons available to kill the other team(s). The terrain is totally destroyable and randomly created (4 billion possibilities). The game itself is round-based, which means you have a certain amount of time to make a "move" with your worm, then it's the next team's turn.